"I don't know." It was never this cold in Georgia--not for so long, anyway--and she isn't sure whether that's how the pathogen works. If people in cold weather could survive it, wouldn't somebody in Sweden or Russia or somewhere have found a way to broadcast that?

The Cetagandan hasn't turned, though. And he was in camp long enough that, if it spread, it would have had it. She bends down toward the head, reaching out a mitten as if to touch it, but not quite letting her hand come that close. "But he hasn't changed."